RCS3216F2491CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F2491CS is a 2.49 kOhms ±1% 0.25W (1/4W) chip resistor manufactured by Samsung Electro-Mechanics in the 1206 (3216 Metric) package. This thick film resistor features anti-sulfur and moisture-resistant construction with a temperature coefficient of ±100ppm/°C and operating range of -55°C to 155°C. The part is currently Active in product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design requirements necessitate alternative manufacturers or enhanced specifications such as automotive qualification or higher power ratings.

Key Parameters

Parameter	Value
Resistance	2.49 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216F2491CS is determined by strict adherence to the following core parameters:

Critical Parameters (Must Match Exactly):

Resistance value: 2.49 kOhms
Tolerance: ±1%
Package / Case: 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C to 155°C
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Power rating may be equal or higher (0.25W or greater)
Manufacturer may differ
Packaging format may differ (Tape & Reel acceptable)
Additional features (automotive AEC-Q200 qualification, pulse withstanding capability) are allowable enhancements
RoHS compliance status may vary (ROHS3 compliant or non-compliant parts are both listed)

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the RCS3216F2491CS within the 1206 package footprint.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	MSL	RoHS Status	Product Status
RCS3216F2491CS	Samsung Electro-Mechanics	2.49 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	1	ROHS3	Active
CR1206-FX-2491ELF	Bourns Inc.	2.49 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	1	ROHS3	Active
CRCW12062K49FKEA	Vishay Dale	2.49 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	1	ROHS3	Active
CRCW12062K49FKEAHP	Vishay Dale	2.49 kOhms	±1%	0.75W	1206	±100ppm/°C	-55°C ~ 155°C	1	ROHS3	Active
CRCW12062K49FKTA	Vishay Dale	2.49 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	1	RoHS non-compliant	Active
ERJ-8ENF2491V	Panasonic Electronic Components	2.49 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	1	ROHS3	Not For New Designs
RC1206FR-072K49L	YAGEO	2.49 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	1	ROHS3	Active
RMCF1206FT2K49	Stackpole Electronics Inc	2.49 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	1	ROHS3	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

Parts with Active product status and ROHS3 compliance are suitable for new design implementations:

CRCW12062K49FKEA (Vishay Dale): Active status, ROHS3 compliant, automotive AEC-Q200 qualified, 34,838 units in stock
RC1206FR-072K49L (YAGEO): Active status, ROHS3 compliant, 10,200 units in stock
RMCF1206FT2K49 (Stackpole Electronics Inc): Active status, ROHS3 compliant, automotive AEC-Q200 qualified, 113,629 units in stock
CR1206-FX-2491ELF (Bourns Inc.): Active status, ROHS3 compliant, 699,858 units in stock

Enhanced Power Rating Option:

CRCW12062K49FKEAHP (Vishay Dale): Provides 0.75W (3/4W) power rating with pulse withstanding capability while maintaining all other electrical parameters. Active status, ROHS3 compliant, automotive AEC-Q200 qualified. Suitable when higher power dissipation margin is required within the same 1206 package footprint.

Automotive Applications:

For designs requiring automotive qualification, the following parts carry AEC-Q200 certification:

CRCW12062K49FKEA (Vishay Dale)
CRCW12062K49FKTA (Vishay Dale) — Note: RoHS non-compliant
ERJ-8ENF2491V (Panasonic) — Note: Not For New Designs status
RMCF1206FT2K49 (Stackpole Electronics Inc)

Legacy or Constrained Supply Scenarios:

ERJ-8ENF2491V (Panasonic Electronic Components): Carries "Not For New Designs" status but remains available with 149,076 units in stock. Suitable only for legacy system maintenance or when other substitutes are unavailable.
CRCW12062K49FKTA (Vishay Dale): RoHS non-compliant status. Use only when RoHS compliance is not a design requirement.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RCS3216F2491CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts maintain identical resistance (2.49 kOhms), tolerance (±1%), package (1206), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Direct substitution is electrically and mechanically compatible. The CRCW12062K49FKEAHP offers higher power rating (0.75W vs. 0.25W) and remains compatible.

Q: What is the difference between the main part and CR1206-FX-2491ELF?

A: Both parts are electrically identical with matching resistance, tolerance, power rating, and temperature specifications. The primary differences are manufacturer (Bourns vs. Samsung Electro-Mechanics) and packaging format (Tape & Reel). The CR1206-FX-2491ELF has significantly higher inventory availability (699,858 units).

Q: Why is ERJ-8ENF2491V marked "Not For New Designs"?

A: The ERJ-8ENF2491V carries a "Not For New Designs" product status designation from Panasonic Electronic Components. This indicates the manufacturer is phasing out this part number. While electrically equivalent and currently in stock, it should be used only for legacy system maintenance or repair. New designs should select from parts with Active status.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts carrying this certification (CRCW12062K49FKEA, CRCW12062K49FKTA, ERJ-8ENF2491V, RMCF1206FT2K49) have undergone rigorous testing for automotive applications including temperature cycling, humidity resistance, and reliability under automotive operating conditions.

Q: Can I use CRCW12062K49FKEAHP as a direct replacement for RCS3216F2491CS?

A: Yes. The CRCW12062K49FKEAHP is electrically compatible with identical resistance, tolerance, and temperature specifications. The higher power rating (0.75W vs. 0.25W) provides additional thermal margin and is a direct upgrade. Physical dimensions remain within 1206 package specifications. Pulse withstanding capability is an additional feature that does not affect standard operation.

Q: What is the significance of RoHS compliance status?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances regulations, restricting lead and other hazardous materials. Most substitute parts are ROHS3 compliant. CRCW12062K49FKTA is RoHS non-compliant and should be used only in applications where RoHS compliance is not required.

Q: Are there dimensional differences between substitute parts?

A: All parts conform to the 1206 (3216 Metric) package standard with nominal dimensions of 3.20mm × 1.60mm length and width. Height variations exist within acceptable tolerances: ranging from 0.60mm to 0.75mm maximum seated height. These variations do not affect PCB assembly compatibility or electrical performance.

Q: Which substitute offers the best inventory availability?

A: CR1206-FX-2491ELF (Bourns Inc.) offers the highest inventory with 699,858 units in stock, followed by RMCF1206FT2K49 (Stackpole Electronics Inc.) with 113,629 units. Both are Active status with ROHS3 compliance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message